Franklin Armory M4-BLR Complete AR15 Lower, Black, BFSIII Binary Trigger Installed, M4 Buttstock

The Franklin Armory M4-BLR Complete AR15 Lower Receiver comes factory-equipped with the highly sought-after BFSIII Binary Trigger, delivering one of the fastest and most responsive firing systems available for AR-15 platforms. Built for reliability and performance, this complete lower features a durable black finish, a classic M4 rifle buttstock, and is fully compatible with standard AR-15 uppers.

The BFSIII trigger system allows a round to fire both on the pull and the release (while still allowing safe semi-auto operation), enabling faster follow-up shots and tighter shooting cycles—perfect for range enthusiasts, tactical training, and competition shooters. With the trigger already installed and tested by Franklin Armory, this lower arrives drop-in ready for quick assembly.

Whether you're upgrading an existing rifle or starting a new AR build, the Franklin Armory M4-BLR Lower provides premium performance, rugged construction, and unmatched binary trigger capability straight out of the box.

• Platform: AR-15 Complete Lower Receiver
• Trigger: Franklin Armory BFSIII Binary Trigger installed
• Finish: Black
• Stock: M4 rifle buttstock
• Compatibility: Standard AR-15 upper receivers
• Features: Drop-in ready, enhanced fire-control functionality